Home / 90,988,672.80-136,483,009.20-90,421,802.40

Finding the Fourth Proportional to 90,988,672.80, 136,483,009.20 and 90,421,802.40

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Solution

The fourth proportional to 90,988,672.80, 136,483,009.20 and 90,421,802.40 is: 135,632,703.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,988,672.80 : 136,483,009.20 = 90,421,802.40 : x
  2. Step 2: Convert to fraction form
    90,988,672.80/136,483,009.20 = 90,421,802.40/x
  3. Step 3: Cross multiply
    90,988,672.80x = 136,483,009.20 × 90,421,802.40
  4. Step 4: Simplify right side
    90,988,672.80x = 12,341,039,688,839,782
  5. Step 5: Solve for x
    x = 12,341,039,688,839,782/90,988,672.80
  6. Step 6: Final answer
    x = 135,632,703.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.