Home / 134,970.32-186,295.07-77,615.91

Finding the Fourth Proportional to 134,970.32, 186,295.07 and 77,615.91

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Solution

The fourth proportional to 134,970.32, 186,295.07 and 77,615.91 is: 107,130.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,970.32 : 186,295.07 = 77,615.91 : x
  2. Step 2: Convert to fraction form
    134,970.32/186,295.07 = 77,615.91/x
  3. Step 3: Cross multiply
    134,970.32x = 186,295.07 × 77,615.91
  4. Step 4: Simplify right side
    134,970.32x = 14,459,461,580.60
  5. Step 5: Solve for x
    x = 14,459,461,580.60/134,970.32
  6. Step 6: Final answer
    x = 107,130.67

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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.