Home / 134,831.28-186,058.80-74,402.40

Finding the Fourth Proportional to 134,831.28, 186,058.80 and 74,402.40

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Solution

The fourth proportional to 134,831.28, 186,058.80 and 74,402.40 is: 102,670.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,831.28 : 186,058.80 = 74,402.40 : x
  2. Step 2: Convert to fraction form
    134,831.28/186,058.80 = 74,402.40/x
  3. Step 3: Cross multiply
    134,831.28x = 186,058.80 × 74,402.40
  4. Step 4: Simplify right side
    134,831.28x = 13,843,221,261.12
  5. Step 5: Solve for x
    x = 13,843,221,261.12/134,831.28
  6. Step 6: Final answer
    x = 102,670.70

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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.