Home / 145,478,447.35-200,758,686.10-79,398,409.07

Finding the Fourth Proportional to 145,478,447.35, 200,758,686.10 and 79,398,409.07

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Solution

The fourth proportional to 145,478,447.35, 200,758,686.10 and 79,398,409.07 is: 109,568,946.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,478,447.35 : 200,758,686.10 = 79,398,409.07 : x
  2. Step 2: Convert to fraction form
    145,478,447.35/200,758,686.10 = 79,398,409.07/x
  3. Step 3: Cross multiply
    145,478,447.35x = 200,758,686.10 × 79,398,409.07
  4. Step 4: Simplify right side
    145,478,447.35x = 15,939,920,283,626,924
  5. Step 5: Solve for x
    x = 15,939,920,283,626,924/145,478,447.35
  6. Step 6: Final answer
    x = 109,568,946.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.