Home / 153,382,643.72-211,673,271.63-90,712,463.80

Finding the Fourth Proportional to 153,382,643.72, 211,673,271.63 and 90,712,463.80

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Solution

The fourth proportional to 153,382,643.72, 211,673,271.63 and 90,712,463.80 is: 125,186,289.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,382,643.72 : 211,673,271.63 = 90,712,463.80 : x
  2. Step 2: Convert to fraction form
    153,382,643.72/211,673,271.63 = 90,712,463.80/x
  3. Step 3: Cross multiply
    153,382,643.72x = 211,673,271.63 × 90,712,463.80
  4. Step 4: Simplify right side
    153,382,643.72x = 19,201,403,989,692,728
  5. Step 5: Solve for x
    x = 19,201,403,989,692,728/153,382,643.72
  6. Step 6: Final answer
    x = 125,186,289.16

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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.