Home / 142,055.61-196,030.59-77,523.21

Finding the Fourth Proportional to 142,055.61, 196,030.59 and 77,523.21

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Solution

The fourth proportional to 142,055.61, 196,030.59 and 77,523.21 is: 106,978.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,055.61 : 196,030.59 = 77,523.21 : x
  2. Step 2: Convert to fraction form
    142,055.61/196,030.59 = 77,523.21/x
  3. Step 3: Cross multiply
    142,055.61x = 196,030.59 × 77,523.21
  4. Step 4: Simplify right side
    142,055.61x = 15,196,920,594.99
  5. Step 5: Solve for x
    x = 15,196,920,594.99/142,055.61
  6. Step 6: Final answer
    x = 106,978.67

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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.