Home / 100,848.47-139,178.95-57,831.92

Finding the Fourth Proportional to 100,848.47, 139,178.95 and 57,831.92

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Solution

The fourth proportional to 100,848.47, 139,178.95 and 57,831.92 is: 79,812.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,848.47 : 139,178.95 = 57,831.92 : x
  2. Step 2: Convert to fraction form
    100,848.47/139,178.95 = 57,831.92/x
  3. Step 3: Cross multiply
    100,848.47x = 139,178.95 × 57,831.92
  4. Step 4: Simplify right side
    100,848.47x = 8,048,985,061.61
  5. Step 5: Solve for x
    x = 8,048,985,061.61/100,848.47
  6. Step 6: Final answer
    x = 79,812.66

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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.